Perhaps you should try some spelling variations:
cong doanh » cong danh, cong doan, dong doanh
hoc chieu » hoc thieu, ho chieu, hoc dieu
hanh mang » nhanh mang, hanh trang, nhanh lang
doanh van » doan van, doanh va, doanh ban
cua tong » cua cong, cua nong, cua song
cua dong » chua dong, cua cong, cua dang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (hoc hien)) sach - hanh mang ((cua tong) OR (cua dong)) cong doanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) sach - hanh mang ((cua tong) OR (cua dong)) cong doanh van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc hien)) sach - hanh mang ((cua tong) OR (cua dong)) cong doanh van ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc hien)) sach - hanh mang ((cua tong) OR (cua dong)) cong doanh van ban*.